Streamlines shows the vortex in post process
 

Hey,guys
I saw a streamlines figure from other's paper, which shows the vortex after the airfoil and the lines are not arrange orderly.
I wonder if I can get this type streamlines in Star CCM or how can I make this type streamline.
Anyone can solve my baffle?

Use a constrained streamline on a plane section.

Thanks a lot for your reply.
I don't make it in my 2D simulation:o.Could you please make a detail explanation？

If your simulation is 2D then you can simply add the region as the seed for a constrained streamline. There's really not much else to explain.

Create derived part, streamline. And play around with the seed settings. There's not much else to explain.

Thanks a lot for your reply.
I'm trying different setting of the streamline.